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Giancoli 7th Edition textbook cover
Giancoli's Physics: Principles with Applications, 7th Edition
18
Electric Currents
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18-2 and 18-3: Electric Current, Resistance, Ohm's Law
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18-4: Resistivity
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18-5 and 18-6: Electric Power
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18-7: Alternating Current
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18-8: Microscopic View of Electric Current
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Question by Giancoli, Douglas C., Physics: Principles with Applications, 7th Ed., ©2014, Reprinted by permission of Pearson Education Inc., New York.
Problem 27
Q

What is the maximum power consumption of a 3.0-V portable CD player that draws a maximum of 240 mA of current?

A
0.72 W0.72 \textrm{ W}
Giancoli 7th Edition, Chapter 18, Problem 27 solution video poster
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VIDEO TRANSCRIPT

This is Giancoli Answers with Mr. Dychko. Power consumption of the C.D player is going to be the current that it draws times the voltage it is operating at. So it operates at three volts and it draws 240 times ten to the minus three amps which is 0.72 Watts.

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Giancoli Answers, including solutions and videos, is copyright © 2009-2024 Shaun Dychko, Vancouver, BC, Canada. Giancoli Answers is not affiliated with the textbook publisher. Book covers, titles, and author names appear for reference purposes only and are the property of their respective owners. Giancoli Answers is your best source for the 7th and 6th edition Giancoli physics solutions.